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Publication Title | Supercritical carbon dioxide as a green solvent for processing polymers

Organic Rankine Cycle

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Chapter 1: Supercritical carbon dioxide as a green solvent for processing polymers 1

Chapter 1

Supercritical carbon dioxide as a green solvent for processing polymers

Supercritical fluids are well established as a processing solvent in various polymer applications such as polymer modification, formation of polymer composites, polymer blending, microcellular foaming, particle production and polymerization. As carbon dioxide (CO2) is quite soluble in many polymers, it can be used as a solvent or plasticizer. Apart from an inert nature and easily attainable supercritical conditions, gas-like diffusivity and liquid-like density in the supercritical phase allow replacing conventional, often noxious, solvents with supercritical CO2. Dissolved CO2 causes a considerable reduction in the viscosity of molten polymer, a very important property for the applications stated above. In this chapter, solubility and viscosity measurement studies and various particle production methods which use supercritical CO2 have been discussed. Finally, the purpose of the thesis and its contents have been discussed.

Sameer P. Nalawade, Francesco Picchioni, L. P. B. M. Janssen, Supercritical carbon dioxide as a green solvent for processing polymer melts: processing aspects and applications, a review, Progress in Polymer Science, in press.

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